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07/02/2014 - Eveready Mills saves 10 % energy and a lot of money

“We do not inherit the earth from our parents, we borrow it from our children” – Chief Seattle. So it is important to conserve energy and to investigate solutions for energy savings. Rieter has followed this direction to innovate the concept of “ECOrized” in its product portfolio. The Indian company Eveready Spinning Mills Pvt Ltd. realized a 10 % energy saving in ring spinning with the suction tube ECOrized. They regard this solution as a sustainable money saving innovation.

Fig. 1: Suction tube ECOrized

Fig. 2: Mr. S. Saravanakumar, Executive Director, Eveready Spinning Mills Private Limited, India

In January 2013 Swiss Government handed over to Rieter the “Watt d’Or” award for the new suction tube ECOrized (Fig. 1) as “excellent energy project, plausible concept and outstanding innovation”.

The suction tube ECOrized for Rieter ring spinning machines replaces the existing suction tubes to reduce suction power by about 50 %. Each spinning position currently features a suction opening for extracting ends down and tangles. However, this is only needed in very few cases. So why not use a suction tube that opens fully only when necessary? The suction tube ECOrized offers this advantage and the resulting energy savings. Existing suction tubes can simply be replaced. Considerable energy savings are achieved.

Winner of Rieter’s suction tube “ECOrized”

Eveready Spinning Mills Pvt Ltd - Unit 4 located in Dindigul, Tamilnadu – South India is one of the five winners of Rieter’s “ECOrized” competition. They received a free kit of ECOrized suction tubes with free delivery and installation for one of their 18 ring spinning machines G 32, each with 1 440 spindles.

Power study in ring spinning

Three consecutive trials were undertaken by Eveready. The study compares power consumed by the standard suction tube and the suction tube ECOrized. On the G 32 with the suction tube ECOrized the frequency could be reduced to 35 Hz by a frequency inverter. The machine was running normally with good overall performance. The energy consumption of this machine was reduced by nearly 10 %.

 

PROCESS PARAMETERS
Count
Ne 24
No. of spindles
1 440
Material
Cotton
Ring diameter
38 mm
Avg. spindle speed
16 792 rpm
Lift
170 mm
Twist per inch
16.52
Draft
24.24
RESULT COMPARISON FOR AVERAGE OF 3 DOFFS
Suction tube
standard
ECOrized
Suction motor
9 kW
9 kW
Frequency inverter
no
yes
Running frequency [Hz]
50
35
Actual yarn production per doff [kg]
64.944
64.848
Power consumed per doff [kW]
60.7
54.78
Power consumed per kg yarn (UKG) [kW/kg]
0.935
0.845
Savings with ECOrized
       0.09 kW/kg
ENERGY SAVING WITH SUCTION TUBE ECOrized
9.6 %
Savings in INR per G 32 per year
(INR 6 per kWh)
INR 265 375
Savings in USD per G 32 per year
(exchange rate INR 61 per USD)
USD 4 350

Eveready comments on the cost saving in practice

Mr. S. Saravanakumar (Fig. 2), executive director Eveready, gave following statement. “Any saving in the energy cost impacts the cost of yarn manufacturing positively. Many controlled studies in our mill on G 32 ring spinning machine indicate a definite 8 to 10 % saving in the total ring spinning power consumption when we use Rieter’s suction tube ECOrized.
We are also contemplating to retrofit the suction tube ECOrized on the remaining G 32 ring spinning machines. The suction tube ECOrized is a sustainable, money saving innovation in ring spinning and proved worthwhile for the company.”

Download Pictures

  Suction Tube ECOrized
(JPG/CMYK/10.2 MB) (right click, save as....)

  Mr. S. Saravanakumar, Executive Director, Eveready Spinning Mills Private Limited, India
(JPG/CMYK/2.4 MB) (right click, save as....)

About Rieter

Rieter is a leading supplier on the world market for textile machinery and components used in short staple fiber spinning. Based in Winterthur (Switzerland), the company develops and manufactures systems, machinery and technology components used to convert natural and manmade fibers and their blends into yarns. Rieter is the only supplier worldwide to cover spinning preparation processes as well as all four final spinning processes currently established on the market. With 18 manufacturing locations in ten countries, the company employs a global workforce of some 4 800, about 25 % of whom are based in Switzerland. Rieter is listed on the SIX Swiss Exchange under ticker symbol RIEN. (www.rieter.com)

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Contact for technical press

Selma Wobben
Marketing Rieter Machines & Systems
Rieter Machine Works Ltd.
Klosterstrasse 20
CH-8406 Winterthur
T +41 52 208 76 38
F +41 52 208 80 61
 machines@rieter.com